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Gaer Roman Site is a Roman fort situated in Wales and protected by Cadw under reference MG009. The fort occupies ground underlain by Wenlock Rocks, a formation of mudstone, siltstone and sandstone dating to the Wenlock epoch. This solid bedrock foundation provided a stable base for the substantial structures required of a military installation, whilst the varied geology of the site would have offered opportunities for extracting building materials and stone.
Roman forts of this period typically followed a standardised playing-card layout, with a central headquarters building, barracks, stores and commander's residence arranged within a defensive rampart and ditch system. The Wenlock-derived soils and bedrock surrounding the fort would have presented specific challenges and advantages for Roman engineers undertaking construction and maintenance work in the Welsh landscape.
The site preserves evidence of Rome's military presence in Wales and continues to provide valuable information about the organisation, logistics and daily life of the soldiers stationed there. The fort's location and design reflect the strategic importance of Roman military installations in controlling and administering the region during the occupation period.
Gaer Roman Site is a scheduled monument protected by Cadw under reference MG009. View the official record →
Gaer Roman Site is a Roman fort situated in Wales and protected by Cadw under reference MG009.
Gaer Roman Site dates from the roman period, and is classified as a fort. It is one of over 32,000 scheduled monuments protected across the UK.
Gaer Roman Site is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is MG009.
Several scheduled monuments lie within 10 km, including Pen y Coed Hillfort, Cyfronydd (4.2 km), Mound in Churchyard (5.8 km), Tregynon Moated Site (6.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Gaer Roman Site's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Gaer Roman Site stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is mudstone, siltstone and sandstone.